Comprehensive study of incentives in sentencing for lawful behavior ex-post of criminal

作为从刑法学角度对犯罪分子的合法行为进行研究的起点，笔者介绍和回顾了德国对刑事证人制度的量刑优惠规定的情况。并在该书的研究中总结了从犯罪论的角度将“自愿放弃”作为“罪犯的合法行为”研究的一大部分，并指出了传统观点对自愿放弃制度的一些误区。

As a beginning of the research on "lawful behavior ex-postof criminals" from the side of the penal theory, I introduce and review the situation of Germany provided preferential provisions on sentencing for "crown witness system". And I summarized in the book study was a big part of the research on "voluntary abandonment" as "lawful behaviorex-post of criminals" from the side of the crime theory, and pointed out some misconceptions found in the view of traditional on to voluntary abandonment system.